The average price of gasoline in the United States dipped over the past two weeks thanks to large falls in Midwestern states, coupled with cheaper crude oil, and prices should remain stable or even lower in the weeks ahead, a survey issued on Sunday showed.

Gasoline cost $3.5969 a gallon on average, according to the Lundberg Survey of about 2,500 retail stations taken on June 21. That is 4.16 cents a gallon cheaper than the last survey on June 7, but still 11.89 cents more than a year ago.